Spraying-nozzle.



H. H. HARDIE.

SPRAYING NOZZLE.

APPLICATION FILED OCT. 28. ms.

Patented Nov. 13, 1917.

5% Maw 70m "UNITED strains DATNT ornron.

HENRY l-I. HARDIE, OF HUDSON, MICHIGAN, ASSIGNOR, TO THE HARDIE MANUFAC-TURING COMPANY, OF HUDSON, MICHIGAN, A COBPGRATION OF MICHIGAN.

SPRAYING-NOZZLE.

Specification of Letters Patent.

Patented Nov. 13, 1917.

Application filed October 28, 1916. Serial No. 128,199.

To all whom it may concern:

Be it known that I, HENRY H. HARDIE, a citizen of the United States ofAmerica, residing at Hudson, in the county of Lenawee and State ofMichigan, have invented certain new and useful Improvements inSpraying-\ ozzles, of which the following 1s a specification, referencebeing had therein to the accompanying drawings.

The invention relates to nozzles more particularly designed for use inspraying trees and other vegetation, and it is the ob ect of theinvention, first, to obtain a finer atomization of the liquid; second,to avoid dripping from the nozzle; and third, to provide an easyadjustment to compensate for wear so as to maintain a uniform action.

In the drawings:

Figure l is a perspective view of the nozzle;

Fig. 2 is a longitudinal section therethrough;

Fig. 3 is a plan view;

Fig. 4: is a cross-section.

In the present state of the art spraying nozzles for the purposedescribed are usually formed with a jet opening arranged to direct theliquid at an angle against a distributing surface by which the stream isflattened out into a. spray. Difficulty has been experienced in adripping of some of the liquid from the distributing surface and variousexpedients have been tried to overcome this defect. Another difficultyis that the spray delivered from the surface is not as finely atomizedas desirable. With the present invention I have obtained a constructionwhich very effectually prevents any dripping of liquid from the nozzleand which forms a spray more highly atomized than with constructionsheretofore devised. There is also provision for adjustment andre-setting of the nozzle to compensate for wear and to maintain uniformefliciency at all times.

In detail, A is a fitting for connection to the end of the liquidconduit, which is provided with a flat elongated face B. C and C areapertures through the face B communicating with the chamber within thefitting. D and D are inclined spraying surfaces arranged to partiallycover the apertures C- and C and to direct the liquid in convergingplanes. These surfaces are substantially semi-circular and are arrangedconcentric with the apertures C and C, so that the radial length fromsaid apertures to each point in the periphery of the sur face issubstantially equal. To adjust the size of the apertures C and C theparts D and D are longitudinally adjustable, preferably by providingthem with flanges E and E slotted at F and F and secured to the surfaceB by clamping screws G and G. lVith the construction described, when themembers D and D are properly set they will extend across the apertures Cand C so as to cut the stream of liquid, permitting the latter toflatten out upon the surface without entrapping air. As the liquid istraveling at high velocity through the aperture and is directed at anangle to the surface it will be flattened out into a thinradiallyexpanding sheet, which at a point beyond the nozzle willintersect the plane of the sheet from the opposite surface. The meetingof these two sheets will highly atomize the liquid, and as the radiallength from the jet to the periphery of each surface is uniform inlength there will be no dripping.

The spraying materials commonly used in apparatus of this kind containsolid par ticles of a gritty nature which have an abrasive action on thenozzle. Thus the apertures C and C will be gradually enlarged, whichwill tend to lessen the velocity of the liquid passing therethrough andto interfere with the efficiency of the spray. This difliculty isavoided by adjusting the members D and D whenever necessary, therebymaintaining a uniform area of opening.

As the members D and D are separately formed from the fitting A, theymay be made of a harder material so as to better withstand the wear.

What I claim as my invention is:

1. A spray nozzle, comprising a hollow fitting having a plane face and apair of discharge apertures opening in said face, a pair of memberslongitudinally adjustably secured to said surface to variably obstructthe respective apertures, said members having arc-shaped surfacesinclined to the axes of the discharge apertures and concentric thereto,the intersection of the planes of said surfaces being outside of thenozzle.

2. A spray nozzle, comprising a fitting having a liquid inlet and a pairof liquid discharge apertures opening in a plane surface of saidfitting, and a pair of members adjustable to and from each other uponsaid surface to variably obstruct said discharge apertures, said membershaving deflecting surfaces oppositely inclined with the aperturedsurface.

8. A spray nozzle, comprising a fitting having a liquid inlet and a pairof liquid discharge apertures, a pair of members mounted upon saidfitting and adjustable to 10 respectively variably obstruct therespective apertures, said members having deflecting ting, the deflectormembers being slotted to receive the clamping members and to permitadjustment relative thereto.

In testimony whereof I afiiX my signature.

HENRY H. HARDIE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washingten, D. G.

